A crane for municipal engineering construction

Abstract

The present invention discloses a crane for municipal engineering construction, which relates to the technical field of engineering machinery equipment, and includes a main body mechanism, wherein a lifting mechanism is slidably embedded on the top of the main body mechanism. During use, the pressure detector detects the system status in real time, and once an abnormal signal is found, it is immediately transmitted to the controller for processing, and the controller then starts a micro motor for automatic adjustment, and the system stability can be quickly restored without manual intervention. This intelligent monitoring and adjustment mechanism improves the automation level and operation safety of the equipment, and the built-in balance adjustment mechanism of the system can automatically adjust the thrust according to the change of the lifting load to maintain the horizontal stability of the lifting beam. Even in extreme cases, the balance block can respond quickly, and the position of the counterweight block is automatically adjusted through the linkage of the pressure detector and the micro motor to ensure overall balance and ensure operation safety.

Description

Technical Field

[0001] The invention relates to the technical field of engineering machinery and equipment, in particular to a crane for municipal engineering construction. Background Art

[0002] A crane is a multi-action lifting machinery that can lift heavy objects vertically and move them horizontally within a certain range. It is also called an overhead crane, an overhead crane, or a hoist. Since cranes are large-scale mechanical equipment, their safety and stability are of vital importance. Therefore, when using cranes, you must strictly abide by operating procedures and safety specifications to ensure the normal operation of the equipment and the safety of operators. At the same time, regular maintenance and servicing of cranes is also an important measure to ensure their long-term and stable operation. In short, cranes are one of the indispensable and important equipment in modern industrial production. They are of many types, powerful functions, and widely used. During use, we should fully understand their performance and characteristics, and strictly operate and maintain them in accordance with the specifications to ensure their safe and reliable operation.

[0003] In the prior art, such as Chinese patent number: CN118145512B, a crane for municipal engineering construction is provided, including a support plate and a connecting plate movably mounted on a tire transport vehicle with support legs, the upper surface of the support plate is movably mounted with a support arm through an axis, and the inner part of the support arm is movably sleeved with a movable arm. Through the support arm, movable arm, power telescopic rod and resistance telescopic rod, when transporting materials, the materials can be graded according to their height. In mode one, only the support arm is kept in a vertical state, and then the resistance telescopic rod is extended, which is used when transporting small materials and the material transportation position is not high. In mode two, the movable arm is first raised as a whole in the support arm, and the connecting block is fixed, and then the power telescopic rod and the resistance telescopic rod are extended respectively, and the length of the overall support rod is extended again to meet the needs of vertical transportation of long objects and effectively increase the height that the crane can lift.

[0004] Although the above-mentioned equipment can increase the height that the crane can lift, in the face of complex and changeable construction environments and growing efficiency and safety demands, traditional cranes have gradually revealed their limitations: limited flexibility, making it difficult to quickly adapt to changing operating conditions; insufficient stability, which may cause shaking during the lifting process, affecting operational accuracy and safety; a complex operating interface that requires high skills from the operator, increasing the difficulty of operation and the risk of error; and the above-mentioned devices and existing equipment make it difficult to properly adjust the weight of the counterweight object, which can easily lead to problems with balance tilt, posing a safety hazard. Summary of the invention

[0005] The purpose of the present invention is to provide a crane for municipal engineering construction to solve the above-mentioned background, overcome the shortcomings of traditional equipment, and meet the needs of modern municipal construction for efficient, safe and intelligent construction equipment.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: A crane for municipal engineering construction, comprising a main body mechanism, a lifting mechanism is slidably embedded on the top of the main body mechanism;

[0007] The lifting mechanism includes two moving columns, the outer surfaces of the two moving columns are fixedly connected with a group of transmission boxes B, the transmission ends of the two groups of transmission boxes B are fixedly connected with a rotating motor, a top plate is fixedly installed between the opposite sides of the two moving columns, a bottom plate is fixedly installed at the bottom of the top plate, a driving motor is fixedly installed at the top center of the top plate, the rotating end of the driving motor is fixedly connected with a driving rod, the top of the driving rod is fixedly installed with an adjusting seat C, the adjusting end of the adjusting seat C is fixedly connected with a lifting beam, a fixing groove is opened at the top of the lifting beam, a micro motor is fixedly inserted into the inner surface wall of the fixing groove, a group of driving grooves is preset inside the lifting beam, a group of driving grooves are fixedly inserted with bearings in the inner surface wall of each group of driving grooves, a threaded rod is fixedly inserted between the inner surface walls of each group of bearings, the outer surface wall of the threaded rod is threadedly connected with a moving seat, and in the ingenious design of the crane, the adjusting seat A is firmly fixed and installed It is installed between the outer surfaces of the driving rod, playing a key supporting and connecting role. At the same time, the adjusting seat B is cleverly placed at the bottom of the lifting beam, echoing the adjusting seat A, and together they provide a solid foundation for the balance adjustment system of the crane. What is particularly critical is that the core component, the cylinder, is cleverly placed between the adjusting seat A and the adjusting seat B in a movable plug-in manner. During the operation of the crane, the cylinder, as a driving element, can adjust its thrust in real time according to the changes in the lifting load. Through precise mechanical feedback and control mechanisms, the cylinder can drive the lifting beam to make subtle angle adjustments, thereby continuously maintaining the balance of the lifting beam in the horizontal direction. This design not only ensures the stability and safety of the crane during the lifting process, but also greatly improves the intelligence and automation level of the equipment. Even in the complex and changeable municipal construction environment, it can effectively respond to various challenges and achieve efficient and precise material lifting and transfer operations.

[0008] Preferably, a group of inner grooves are preset inside the moving seat, and the rotating end of the micro motor is fixedly connected to one side of the outer wall of the threaded rod, and a group of rotating holes are preset inside the moving seat, and the inner surface walls of a group of the rotating holes are rotatably connected to a rotating rod, and the outer surface wall of the rotating rod is fixedly sleeved with a counterweight. In the ingenious structure of the crane, the counterweight at the bottom is cleverly rotatably connected to the rotating hole through the rotating rod. This design not only realizes a stable connection between the moving seat and the counterweight, but also gives the counterweight the ability to flexibly adjust its position. When the weight of the object carried by the crane increases, in order to maintain the balance of the lifting beam, the system will drive the moving seat to move to the right according to the real-time feedback signal. During this movement, the counterweight adjusts its distribution position accordingly to produce a corresponding The system uses the torque to offset the overturning torque generated by the weight, ensuring that the lifting beam remains horizontal and stable. On the contrary, when the weight of the lifted object is reduced, the system will also respond, driving the moving seat to move to the left, and the counterweight block will adjust its position accordingly to reduce unnecessary torque and restore or maintain the lifting beam to its original balanced state. This automatic adjustment mechanism, based on precise mechanical principles and intelligent control technology, can respond to changes in load during the lifting process in real time and accurately, ensuring that the crane can maintain excellent stability and safety under any working conditions. Through this ingenious adjustment method, the crane can not only operate efficiently in complex municipal construction environments, but also maintain stable lifting performance under various load conditions, providing a strong guarantee for the smooth progress of municipal engineering.

[0009] Preferably, the internal drive of the lifting beam is connected to a winding roller, and one side of the outer wall of the winding roller is fixedly connected to a lifting motor. The outer wall of the lifting motor is fixedly sleeved with a motor plate, and one side of the outer wall of the motor plate is fixedly connected to one side of the outer wall of the lifting beam. The lifting motor is the core power source of the crane, and its precise and powerful rotation performance is the key to achieving efficient lifting operations. When the lifting motor receives the start signal, its internal mechanism responds quickly and drives the winding roller to start rotating. As the winding roller continues to rotate, the originally loose traction rope is gradually tightened and wound around the roller shaft.

[0010] Preferably, a traction rope is wound around the outer wall of the winding roller, a suspension head is fixedly connected to the bottom of the traction rope, and an inner moving groove is provided on the top of the lifting beam. The winding process not only realizes the precise control of the length of the traction rope, but also slowly lifts the product to be lifted through the connection between the traction rope and the suspension head (or lifting device). As the traction rope is continuously wound, the product gradually leaves the ground or the initial position until it reaches the predetermined lifting height or position.

[0011] Preferably, a balancing block is slidably embedded in the inner surface wall of the inner movable groove, an outer rod is fixedly connected to one side of the inner wall of the inner movable groove, a group of inner embedded grooves are preset inside the outer rod, and an embedded block is slidably embedded in the inner surface wall of a group of the inner embedded grooves, and an inner rod is fixedly connected between the inner surface walls of a group of the embedded blocks. In the safety design of the crane, we have fully considered the stability and safety under extreme working conditions. When the weight of the hoisted object exceeds the maximum thrust limit that the cylinder can provide, or the balance of the crane becomes unstable due to excessive lifting or sudden situations during the transfer process, the built-in balance adjustment mechanism will automatically start. At this time, the balancing block, as a key adjustment element, will move rapidly to the side where the crane is tilted under the guidance of the inner movable groove. This movement process is achieved by using the inner rod as a medium rod. The inner rod and the embedded block are closely matched, and the embedded block is slidably embedded in the inner surface of the inner embedded groove, ensuring smooth and stable movement.

[0012] Preferably, a pressure detector is fixedly connected between one side of the outer wall of the inner rod and one side of the inner wall of the outer rod, and a spring is provided on the outer wall of the pressure detector. As the balance block moves, it will produce a squeezing or pulling effect on the internal pressure detector through the inner rod. This physical change is accurately captured by the pressure detector and converted into an electrical signal output. At the same time, the set spring will perform subsequent reset processing on this tilted state to ensure that the system can quickly return to the initial state after the balance is restored.

[0013] Preferably, an adjustment seat A is fixedly installed on the outer wall of the driving rod, and a cylinder is movably sleeved on the adjustment end of the adjustment seat A, and an adjustment seat B is movably inserted on the telescopic end of the cylinder, and the top of the adjustment seat B is fixedly connected to the bottom of the lifting beam. The detection signal is then transmitted to the external sensor system, and after precise analysis and processing, the control command is sent to the controller of the crane. The controller responds quickly according to the received signal, adjusts the operating parameters of the crane or activates the corresponding safety protection mechanism to ensure that the crane can maintain a stable and safe operating state under extreme working conditions.

[0014] Preferably, the main mechanism includes two sets of driving outer frames, the insides of the two sets of driving outer frames are fixedly installed with gear transmission boxes, the output ends of the two sets of gear transmission boxes are fixedly installed with limit wheels, and the output ends of the two sets of gear transmission boxes are fixedly connected with external motors. In the overall design of the crane, we cleverly place the lifting mechanism on the top of the main mechanism to achieve a stable connection between the two. This design not only ensures that the lifting mechanism can stably carry and lift heavy objects, but also provides it with the ability to move flexibly.

[0015] Preferably, a crossbeam is fixedly connected between two of the two groups of driving outer frames, a group of guardrails are fixedly inserted on the tops of the two beams, a telescopic frame is fixedly connected between the opposite sides of the two groups of driving outer frames, a limit plate is fixedly connected to one side of the outer wall of the two beams, and sliding wheels are slidably embedded on the outer walls of the two limit plates. In order to achieve precise movement and positioning of the lifting mechanism on the top of the main mechanism, we adopt a sliding mechanism combining rollers and crossbeams. Under the strong drive of the rotating motor, the rollers can smoothly drive the lifting mechanism to move back and forth on the tops of the two beams. This design not only improves the flexibility of the lifting mechanism, but also enables it to be quickly adjusted to the optimal position to meet the lifting needs under different working conditions.

[0016] Preferably, the bottoms of the two sliding wheels are fixedly connected to the top of the bottom plate, and the bottoms of the two sets of transmission boxes B are slidably embedded in the tops of the two beams. In order to further improve the practicality and adaptability of the equipment, we specially designed two telescopic frames. The two telescopic frames can effectively adjust the distance between the two beams and the positions of the components linked thereto according to actual needs. This distance adjustment function enables the crane to operate flexibly in working spaces of different widths, improving the versatility and operating efficiency of the equipment.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] During use of the present invention, the pressure detector detects the system status in real time. Once an abnormal signal is found, it is immediately transmitted to the controller for processing. The controller then starts the micro motor for automatic adjustment, and the system stability can be quickly restored without human intervention. This intelligent monitoring and adjustment mechanism improves the automation level and operation safety of the equipment, and the built-in balance adjustment mechanism of the system can automatically adjust the thrust according to the change of the lifting load to maintain the horizontal stability of the lifting beam. Even in extreme cases, the balance block can respond quickly, and the position of the counterweight block can be automatically adjusted through the linkage of the pressure detector and the micro motor to ensure overall balance and ensure operation safety.

[0019] When the present invention is in use, the lifting mechanism is precisely installed on the top of the main mechanism, ensuring the stability of the overall structure and providing a solid foundation for subsequent lifting operations. At the same time, the precisely designed roller system enables the lifting mechanism to move flexibly on the beam to find the best working position, improve operational efficiency and accuracy, and enhance flexibility and adaptability: the ingenious configuration of the two telescopic frames enables the system to quickly respond to lifting requirements of different sizes and weights, adjust the spacing between the beams and their associated components, greatly enhancing the flexibility and practicality of the equipment and meeting lifting requirements in different scenarios.

[0020] In the present invention, after the hoisting operation is completed, the bottom driving seat drives the driving rod to rotate, and the position of the hoisted object is accurately adjusted to ensure its stability and safety during the transfer process. This function further improves the comprehensive performance and operation efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a main structural stereogram of a municipal engineering construction crane of the present invention;

[0022] Figure 2 It is a side plan view of a crane for municipal engineering construction of the present invention;

[0023] Figure 3 This is a bottom-up stereoscopic diagram of the main mechanism of a municipal engineering construction crane of the present invention;

[0024] Figure 4 This is a three-dimensional diagram of the structure A in a crane for municipal engineering construction of the present invention;

[0025] Figure 5 A three-dimensional diagram of a crane structure in a municipal engineering construction crane of the present invention;

[0026] Figure 6 It is a three-dimensional exploded view of a crane structure in a municipal engineering construction crane of the present invention;

[0027] Figure 7 It is a three-dimensional exploded view of the lifting mechanism part of a municipal engineering construction crane of the present invention;

[0028] Figure 8 The present invention is a three-dimensional exploded view of the interior of a lifting mechanism in a municipal engineering construction crane.

[0029] In the figure: 1. main body; 11. driving outer frame; 12. gear transmission box; 121. limiting wheel; 13. external motor; 14. crossbeam; 15. guardrail; 16. telescopic frame; 17. limiting plate; 18. sliding wheel; 2. lifting mechanism; 21. moving column; 211. transmission box B; 212. rotating motor; 22. top plate; 221. bottom plate; 23. driving motor; 231. driving rod; 232. adjusting seat C; 24. lifting beam; 241. fixing groove; 242. driving groove; 243. bearing; 24 4. Threaded rod; 245. Inner groove; 246. Micro motor; 25. Moving seat; 251. Rotating hole; 252. Rotating rod; 253. Counterweight; 26. Winding roller; 261. Lifting motor; 262. Motor plate; 263. Traction rope; 264. Suspension head; 265. Inner moving groove; 27. Balance block; 28. Outer rod; 281. Inner embedded groove; 282. Embedded block; 283. Inner rod; 284. Spring; 285. Pressure detector; 29. ​​Adjustment seat A; 291. Cylinder; 292. Adjustment seat B. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Embodiment 1, refer to Figure 1-Figure 8 As shown: The present invention provides a crane for municipal engineering construction, comprising a main body mechanism 1, and a lifting mechanism 2 is slidably embedded on the top of the main body mechanism 1;

[0032] The lifting mechanism 2 includes two moving columns 21, the outer walls of the two moving columns 21 are fixedly connected with a group of transmission boxes B211, the transmission ends of the two groups of transmission boxes B211 are fixedly connected with a rotating motor 212, a top plate 22 is fixedly installed between the opposite sides of the two moving columns 21, a bottom plate 221 is fixedly installed at the bottom of the top plate 22, a driving motor 23 is fixedly installed at the top center of the top plate 22, a driving rod 231 is fixedly connected to the rotating end of the driving motor 23, an adjusting seat C232 is fixedly installed on the top of the driving rod 231, a lifting beam 24 is fixedly connected to the adjusting end of the adjusting seat C232, and a fixing groove 2 is provided on the top of the lifting beam 24 41, a micro motor 246 is fixedly inserted into the inner surface wall of the fixed groove 241, a group of driving grooves 242 are preset inside the lifting beam 24, a group of driving grooves 242 are fixedly inserted into the inner surface wall with bearings 243, a group of threaded rods 244 are fixedly inserted between the inner surface walls of the bearings 243, the outer surface wall of the threaded rod 244 is threadedly connected with a moving seat 25, a group of inner grooves 245 are preset inside the moving seat 25, and the rotating end of the micro motor 246 is fixedly connected to one side of the outer wall of the threaded rod 244, a group of rotating holes 251 are preset inside the moving seat 25, the inner surface wall of a group of rotating holes 251 is rotatably connected with a rotating rod 252, and the rotating rod 252 The outer wall fixed sleeve is provided with a counterweight block 253, the inner driving rotation of the lifting beam 24 is connected to a winding roller 26, one side of the outer wall of the winding roller 26 is fixedly connected to a lifting motor 261, the outer wall fixed sleeve of the lifting motor 261 is provided with a motor plate 262, and one side of the outer wall of the motor plate 262 is fixedly connected to one side of the outer wall of the lifting beam 24, a traction rope 263 is wound around the outer wall of the winding roller 26, and a suspension head 264 is fixedly connected to the bottom of the traction rope 263, an inner moving groove 265 is opened at the top of the lifting beam 24, a balancing block 27 is slidably embedded in the inner wall of the inner moving groove 265, an outer rod 28 is fixedly connected to one side of the inner wall of the inner moving groove 265, and the outer rod 28 A group of embedded grooves 281 are preset inside, and the inner surfaces of the group of embedded grooves 281 are all slidably embedded with embedded blocks 282, and the inner surfaces of the group of embedded blocks 282 are fixedly connected with inner rods 283, and a pressure detector 285 is fixedly connected between the outer wall side of the inner rod 283 and the inner wall side of the outer rod 28, and a spring 284 is movably sleeved on the outer wall of the pressure detector 285. An adjusting seat A29 is fixedly installed on the outer wall of the driving rod 231, and a cylinder 291 is movably sleeved on the adjusting end of the adjusting seat A29, and an adjusting seat B292 is movably inserted at the telescopic end of the cylinder 291, and the top of the adjusting seat B292 is fixedly connected to the bottom of the lifting beam 24.

[0033] In this embodiment, first, when the equipment is in use, under the power-on drive of the lifting motor 261, an electromagnetic field is generated inside the equipment, and the rotor can rotate under the action of this magnetic field, thereby driving the winding roller 26 to rotate inside the lifting beam 24. The rotation of the winding roller 26 can form a retractable processing of the traction rope 263. When the traction rope 263 is placed in a suitable moving position, the suspension head 264 is kept at a suitable height and then hung inside the product. Then, the lifting motor 261 rotates, and the winding roller 26 rotates to form a reeling of the traction rope 263, thereby completing the lifting requirement of the product. In this process, the adjustment seat A29 is fixedly installed between the outer walls of the driving rod 231. The adjusting seat B292 is installed at the bottom of the lifting beam 24, and the cylinder 291 is movably inserted between the adjusting seat A29 and the adjusting seat B292. Driven by the cylinder 291, the balance of the lifting beam 24 can be continuously maintained. In this process, when the weight of the lifted object is too heavy and exceeds the limit of the cylinder 291, and at the same time, when the balance is unstable due to excessive lifting or various reasons during the transfer process, the balancing block 27 can move to the inclined side inside the inner movable groove 265. The balancing block 27 uses the inner rod 283 as the intermediate rod, and with the cooperation of the embedded block 282 slidably embedded in the inner embedded groove 281, the inner rod 283 can be kept on the outer rod 28 The internal back and forth movement will squeeze or pull the internal pressure detector 285, and the spring 284 will reset the tilt. When the detection signal is transmitted to the internal of the external sensor, the signal is analyzed and transmitted to the internal of the controller, and the micro motor 246 is started. When the micro motor 246 is powered on, its output end can rotate, and under the support of the two bearings 243, the threaded rod 244 can be effectively kept to rotate inside the two bearings 243. In the process of rotation, the threaded rotation can be effectively generated inside the moving seat 25, and the moving seat 25 is limited in the cooperation of the inner groove 245. , which can effectively keep the moving seat 25 and the components linked to it at the bottom able to move left and right, and when the counterweight block 253 at the bottom is rotated and connected to the inside of the rotating hole 251 through the rotating rod 252, the connection between the moving seat 25 and the counterweight block 253 can be realized. When the heavier the object being lifted, the moving seat 25 moves to the right, and vice versa, the lighter the object, the moving seat 25 moves to the left. Through this adjustment method, the lifting beam 24 can be better kept balanced. After the lifting process of the object is completed, under the drive of the driving motor 23 at its bottom, the driving rod 231 can be kept rotating, so as to effectively adjust the position of the object placed therein, thereby improving the balance of the equipment during the lifting and transfer process.

[0034] Embodiment 2, according to Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, the main mechanism 1 includes two sets of driving outer frames 11, the inside of the two sets of driving outer frames 11 are fixedly installed with gear transmission boxes 12, the output ends of the two sets of gear transmission boxes 12 are fixedly installed with limiting wheels 121, the output ends of the two sets of gear transmission boxes 12 are fixedly connected with external motors 13, two of the two sets of driving outer frames 11 are fixedly connected with cross beams 14, a group of guardrails 15 are fixedly inserted on the top of the two cross beams 14, and telescopic frames 16 are fixedly connected between the opposite sides of the two sets of driving outer frames 11. One side of the outer wall of the two cross beams 14 is fixedly connected with a limiting plate 17, and the outer walls of the two limiting plates 17 are slidably embedded with sliding wheels 18. The bottoms of the two sliding wheels 18 are fixedly connected to the top of the bottom plate 221, and the bottoms of the two sets of transmission boxes B211 are slidably embedded in the tops of the two cross beams 14.

[0035] In this embodiment, the lifting mechanism 2 is first supported as a whole on the top of the main mechanism 1, and under the action of the rollers, it can be supported on the top of the two beams 14, and under this drive, the rotating motor 212 is powered to maintain the drive, so that the overall lifting mechanism 2 can be driven to move back and forth on the top of the main mechanism 1, so as to adjust itself to an optimal position, improve the requirements for subsequent object placement, and the two telescopic frames 16 can effectively maintain the distance adjustment of the two beams 14 and the components linked thereto, thereby improving the practicality of the equipment.

[0036] The working principle of the whole mechanism is as follows: first, when the equipment is put into use, the lifting mechanism 2 is precisely installed on the top of the main mechanism 1. This process ensures the stability of the structure and the smoothness of subsequent operations. Through the precisely designed roller system, the lifting mechanism 2 can easily slide on the top of the two beams 14 to achieve flexible movement in the horizontal direction. The core power of this process comes from the rotating motor 212, which continuously provides a stable driving force when powered on, so that the lifting mechanism 2 can freely shuttle on the top of the main mechanism 1 to find and lock the best working position, laying a solid foundation for the subsequent object lifting operation. In order to further enhance the flexibility and practicality of the equipment, two telescopic frames 16 are cleverly configured in the system, which can It responds quickly to operating instructions and adjusts the distance between the two beams 14 and their associated components to adapt to hoisting requirements of different sizes and weights. This design not only enhances the adaptability of the equipment, but also significantly improves work efficiency. When the lifting operation officially starts, the lifting motor 261 receives the start signal, and a strong electromagnetic field is quickly generated inside it. Under the action of the electromagnetic force, the rotor begins to rotate at high speed, thereby driving the winding roller 26 to rotate synchronously inside the lifting beam 24. The rotation of the winding roller 26 directly acts on the traction rope 263 to achieve its precise retraction and release control. The operator accurately controls the length of the traction rope 263 according to actual needs, so that the suspension head 264 reaches the ideal height and firmly hangs the object to be hoisted. Subsequently, the lifting motor 261 continues Continue to work, through the winding action of the winding roller 26, the object is lifted smoothly to the predetermined position. During the whole lifting process, it is very important to maintain the balance of the lifting beam 24. For this purpose, the system is specially designed with a balance adjustment mechanism consisting of an adjustment seat A29, an adjustment seat B292 and a cylinder 291. The cylinder 291 is flexibly inserted between the two adjustment seats to automatically adjust the thrust according to the change of the lifting load to ensure that the lifting beam 24 always maintains horizontal stability. However, when encountering extreme situations, such as the weight of the hoisted object far exceeds the preset range or the balance is unstable due to unforeseen factors during the transfer process, the balance block 27 will play a key role. It can quickly move to the inclined side in the inner moving groove 265, through the sliding cooperation of the inner rod 283 and the embedded block 282, Apply pressure or tension to the inner rod 283, thereby triggering the pressure detector 285. The spring 284 is responsible for resetting after the tilt state is released to ensure that the system can quickly return to a stable state. Once the pressure detector 285 detects an abnormal signal, the signal will be immediately transmitted to the external sensor and sent to the controller after analysis and processing. The controller then starts the micro motor 246, which drives the threaded rod 244 to rotate inside the moving seat 25 through the rotation of its output end and the support of the bearing 243. This rotation will drive the moving seat 25 and the components connected to its bottom to move left and right in the inner groove 245 to adjust the position of the counterweight block 253. The counterweight block 253 can be flexibly rotated through the connection between the rotating rod 252 and the rotating hole 251.To ensure rapid response and balance during the adjustment process, as the weight of the hoisted object changes, the moving seat 25 will automatically move to the right or left to maintain the overall balance of the lifting beam 24. Finally, after the hoisting operation is completed, the bottom drive motor 23 will drive the drive rod 231 to rotate so as to accurately adjust the position of the hoisted object to ensure its stability and safety during the transfer process. This series of complex and delicate operations together constitute an efficient, stable and safe operation process of the lifting equipment.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A crane for municipal engineering construction, characterized in that: It comprises a main body mechanism (1), wherein a lifting mechanism (2) is slidably embedded on the top of the main body mechanism (1); The lifting mechanism (2) comprises two moving columns (21), the outer walls of the two moving columns (21) are fixedly connected to a group of transmission boxes B (211), the transmission ends of the two groups of transmission boxes B (211) are fixedly connected to a rotating motor (212), a top plate (22) is fixedly installed between opposite sides of the two moving columns (21), a bottom plate (221) is fixedly installed at the bottom of the top plate (22), a driving motor (23) is fixedly installed at the top center of the top plate (22), a driving rod (231) is fixedly connected to the rotating end of the driving motor (23), and the top of the driving rod (231) is fixedly connected to the rotating end of the driving motor (23). An adjustment seat C (232) is fixedly installed, the adjustment end of the adjustment seat C (232) is fixedly connected to a lifting beam (24), a fixing groove (241) is provided on the top of the lifting beam (24), a micro motor (246) is fixedly inserted into the inner surface wall of the fixing groove (241), a group of driving grooves (242) is preset inside the lifting beam (24), a group of driving grooves (242) are fixedly inserted into the inner surface walls thereof with bearings (243), a group of threaded rods (244) are fixedly inserted between the inner surface walls of the bearings (243), and the outer surface wall of the threaded rods (244) is threadedly connected to a moving seat (25); A group of inner grooves (245) are preset inside the lifting beam (24), the moving seat (25) moves left and right inside the inner grooves (245), and the rotating end of the micro motor (246) is fixedly connected to one side of the outer wall of the threaded rod (244). A group of rotating holes (251) are preset inside the moving seat (25), and the inner surface walls of a group of rotating holes (251) are rotatably connected to a rotating rod (252), and the outer surface wall of the rotating rod (252) is fixedly sleeved with a counterweight block (253); The lifting beam (24) is internally driven and rotatably connected to a winding roller (26), one side of the outer wall of the winding roller (26) is fixedly connected to a lifting motor (261), the outer wall of the lifting motor (261) is fixedly sleeved with a motor plate (262), and one side of the outer wall of the motor plate (262) is fixedly connected to one side of the outer wall of the lifting beam (24); A traction rope (263) is wound around the outer wall of the winding roller (26), a suspension head (264) is fixedly connected to the bottom of the traction rope (263), and an inner moving groove (265) is formed at the top of the lifting beam (24); A balancing block (27) is slidably embedded in the inner surface wall of the inner movable groove (265); an outer rod (28) is fixedly connected to one side of the inner wall of the inner movable groove (265); a group of inner embedded grooves (281) are preset inside the outer rod (28); an embedded block (282) is slidably embedded in the inner surface wall of a group of the inner embedded grooves (281); and an inner rod (283) is fixedly connected between the inner surface walls of a group of the embedded blocks (282); A pressure detector (285) is fixedly connected between one side of the outer wall of the inner rod (283) and one side of the inner wall of the outer rod (28), and a spring (284) is movably sleeved on the outer wall of the pressure detector (285); An adjustment seat A (29) is fixedly mounted on the outer wall of the driving rod (231); a cylinder (291) is movably sleeved on the adjustment end of the adjustment seat A (29); an adjustment seat B (292) is movably inserted into the telescopic end of the cylinder (291); and the top of the adjustment seat B (292) is fixedly connected to the bottom of the lifting beam (24); The main body mechanism (1) comprises two sets of driving outer frames (11), the interiors of the two sets of driving outer frames (11) are fixedly mounted with gear transmission boxes (12), the output ends of the two sets of gear transmission boxes (12) are fixedly mounted with limit wheels (121), and the output ends of the two sets of gear transmission boxes (12) are fixedly connected to external motors (13); A crossbeam (14) is fixedly connected between two of the two groups of driving outer frames (11), a group of guardrails (15) is fixedly inserted on the tops of the two crossbeams (14), a telescopic frame (16) is fixedly connected between the opposite sides of the two groups of driving outer frames (11), a limiting plate (17) is fixedly connected to one side of the outer wall of the two crossbeams (14), and sliding wheels (18) are slidably embedded in the outer walls of the two limiting plates (17), and the two telescopic frames (16) maintain the distance between the two crossbeams (14) and the components linked thereto for adjustment; The bottoms of the two sliding wheels (18) are fixedly connected to the top of the bottom plate (221), and the bottoms of the two sets of transmission boxes B (211) are slidably embedded in the tops of the two crossbeams (14).

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